Bryant 589A, 588A Condenser FAN, XI. Electrical Controls and Wiring, XII. Refrigerant Circuit

IX. CONDENSER COIL, EVAPORATOR COIL, AND CONDENSATE DRAIN PAN

Inspect the condenser coil, evaporator coil, and condensate drain pan at least once each year. Proper inspection and clean- ing requires the removal of the unit top. See Unit Top Re- moval section on page 45.

The coils are easily cleaned when dry; therefore, inspect and clean the coils either before or after each cooling season. Re- move all obstructions, including weeds and shrubs, that in- terfere with the air¯ow through the condenser coil. Straighten bent ®ns with a ®n comb. If coated with dirt or lint, clean the coils with a vacuum cleaner, using the soft brush attach- ment. Be careful not to bend the ®ns. If coated with oil or grease, clean the coils with a mild detergent-and-water solu- tion. Rinse coils with clear water, using a garden hose. Be careful not to splash water on motors, insulation, wiring, or air ®lter(s). For best results, spray condenser coil ®ns from inside to outside the unit. On units with an outer and inner condenser coil, be sure to clean between the coils. Be sure to ¯ush all dirt and debris from the unit base.

Inspect the drain pan and condensate drain line when in- specting the coils. Clean the drain pan and condensate drain by removing all foreign matter from the pan. Flush the pan and drain tube with clear water. Do not splash water on the insulation, motor, wiring, or air ®lter(s). If the drain tube is restricted, clear it with a ``plumbers snake'' or similar probe device. Ensure that the auxiliary drain port above the drain tube is also clear.

X. CONDENSER FAN

CAUTION: Keep the condenser fan free from all ob- structions to ensure proper cooling operation. Never place articles on top of the unit. Damage to unit may result.

1.Remove 2 screws at bottom and 2 screws along sides of condenser air intake grille and remove plastic grille.

2.Inspect the fan blades for cracks or bends.

3.If fan needs to be removed, loosen the setscrew and slide the fan off the motor shaft.

4.When replacing fan blade, position blade so that lead- ing edge is 1¤2 in. in front of fan ori®ce. See Fig. 23.

5.Ensure that setscrew engages the ¯at area on the mo- tor shaft when tightening.

6.Replace grille.

XI. ELECTRICAL CONTROLS AND WIRING

Inspect and check the electrical controls and wiring annu- ally. Be sure to turn off the gas supply, and then the electrical power to the unit.

Remove the control, blower, and compressor compartment ac- cess panels to locate all the electrical controls and wiring. Check all electrical connections for tightness. Tighten all screw con- nections. If any smoky or burned connections are noticed, dis- assemble the connection, clean all the parts, restrip the wire end and reassemble the connection properly and securely.

After inspecting the electrical controls and wiring, replace all the panels. Start the unit, and observe at least one complete heating cycle and one complete cooling cycle to ensure proper operation. If discrepancies are observed in either or both op- erating cycles, or if a suspected malfunction has occurred, check each electrical component with the proper electrical instru- mentation. Refer to the unit wiring label when making these checkouts.

NOTE: Refer to the heating and/or cooling sequence of op- eration in this publication as an aid in determining proper control operation.

XII. REFRIGERANT CIRCUIT

Inspect all refrigerant tubing connections and the unit base for oil accumulations annually. Detecting oil generally indi- cates a refrigerant leak.

If oil is detected or if low cooling performance is suspected, leak-test all refrigerant tubing using an electronic leak- detector, halide torch, or liquid-soap solution. If a refrigerant leak is detected, refer to Check for Refrigerant Leaks section on page 23.

If no refrigerant leaks are found and low cooling perfor- mance is suspected, refer to Checking and Adjusting Refrig- erant Charge section on page 35.

XIII. GAS INPUT

The gas input does not require checking unless improper heat- ing performance is suspected. If a problem exists, refer to Start-Up section on page 23.

XIV. EVAPORATOR AIRFLOW

The heating and/or cooling air¯ow does not require checking unless improper performance is suspected. If a problem ex- ists, be sure that all supply- and return-air grilles are open and free from obstructions, and that the air ®lter is clean. When necessary, refer to Indoor Air¯ow and Air¯ow Adjustments section on page 35 to check the system air¯ow.

XV. METERING DEVICE Ð ACUTROL™ DEVICE

This metering device is a ®xed ori®ce and is located in the header to the evaporator coil.

XVI. LIQUID LINE STRAINER

The liquid line strainer (to protect metering device) is made of wire mesh and located in the liquid line on the inlet side of the metering device.

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